If coefficient of performance of a refrigarator is $\beta $ and heat absorbed from refrigarated space is $Q$, then work done on the system is

  • A

    $\beta Q$

  • B

    $\left( {1 + \beta } \right)Q$

  • C

    $\frac{Q}{\beta }$

  • D

    $\frac{Q}{{\beta  - 1}}$

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